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1995-07-10
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3.6.1 LINK ENTITY
The LINK ENTITY command is used to create custom inter-entity relationships.
Entities may be related as a group by specifying that all selected entities
are to be equal members, or entities can be related in a family-tree
structure where the related group of entities contain parent and child
members.
Linked groups of entities can be constructed in circumstances where a set of
entities may be required to be manipulated collectively or individually. The
transformation and delete commands will automatically search for family
groups if any family member is selected. Alternatively, the FAMILY mode in
IDENTS can be used to trace all family members if any family member entity
is identified.
COMMAND FORMAT
#LINK ENTITY MEMBER PARENT_CHILD :Parents xm .. xn :Children xo .. xp
or
#LINK ENTITY MEMBER EQUAL :Ent x1 x2 ... xn
If the member type specified is PARENT_CHILD, then the parent members are
selected first followed by the child members. The two sets of entities will
be related as parent and child.
If the member type specified is EQUAL, then one group of entities is
selected. All identified entities will be related as one equal group.
LINK ENTITY does not affect any relationships that are already defined. The
command can be used to add members to an already existing family.
MODIFIERS
MEMBER The MEMBER modifier is used to select the type of inter-
entity relationship required. The modifier is followed by one
of two keywords:
PARENT_CHILD To create a parent to child
relationship.
EQUAL To create an equal relationship between
entities.